[Xen-devel] [PATCH] libxl: Support linux-stubdom in libxl

[Jiageng Yu <yujiageng734@xxxxxxxxx>]

author jiageng_yu <yujiageng734@xxxxxxxxx>
Tue, 31 May 2011 02:18:01 +0000 (03:18 +0100)
committer jiageng_yu <yujiageng734@xxxxxxxxx>
ue, 31 May 2011 02:18:01 +0000 (03:18 +0100)
commit 179b4167dd9e86a06a700d60e277c4477f0c06ef
tree 4e4c8492b480e08d9122abcb37aca52ae5650786 tree | snapshot (tar.gz zip)
parent cf4866b9161a724e4b2c366da73de271cf7ef348 commit | diff

libxl: Support linux-stubdom in libxl

Add linux-stubdom support in libxl. Users could start a linux-stubdom
throuh the following options:
device_model_override = 'linux-stubdom'
device_model_stubdomain_override=1

linux-stubdom project: http://repo.or.cz/w/linux-based-stubdoms.git


diff -r 37c77bacb52a tools/libxl/libxl_dm.c
--- a/tools/libxl/libxl_dm.c    Mon May 23 17:38:28 2011 +0100
+++ b/tools/libxl/libxl_dm.c    Tue May 31 02:41:59 2011 +0100
@@ -556,6 +556,14 @@
     return 0;
 }

+inline int libxl__is_linux_stubdom(libxl_device_model_info *info)
+{
+       
if(!strncmp(info->device_model,"linux-stubdom",strlen(info->device_model)))
+               return 1;
+       else
+               return 0;
+};
+
 static int libxl__create_stubdom(libxl__gc *gc,
                                  libxl_device_model_info *info,
                                  libxl_device_disk *disks, int num_disks,
@@ -581,7 +589,12 @@
         goto out;
     }

-    args = libxl__build_device_model_args(gc, "stubdom-dm", info,
+       if(libxl__is_linux_stubdom(info))
+               args = libxl__build_device_model_args(gc, "linux-stubdom", info,
+                                          disks, num_disks,
+                                          vifs, num_vifs);
+       else
+               args = libxl__build_device_model_args(gc, "stubdom-dm", info,
                                           disks, num_disks,
                                           vifs, num_vifs);
     if (!args) {
@@ -599,13 +612,22 @@
     b_info.max_vcpus = 1;
     b_info.max_memkb = 32 * 1024;
     b_info.target_memkb = b_info.max_memkb;
-    b_info.u.pv.kernel.path = libxl__abs_path(gc, "ioemu-stubdom.gz",
-                                              libxl_xenfirmwaredir_path());
     b_info.u.pv.cmdline = libxl__sprintf(gc, " -d %d", info->domid);
-    b_info.u.pv.ramdisk.path = "";
     b_info.u.pv.features = "";
     b_info.hvm = 0;

+       if(libxl__is_linux_stubdom(info)){
+               b_info.u.pv.kernel.path = libxl__abs_path(gc, "vmlinuz-ioemu",
+                                               libxl_xenfirmwaredir_path());
+               b_info.u.pv.ramdisk.path = libxl__abs_path(gc, "ramdisk-ioemu",
+                                               libxl_xenfirmwaredir_path());
+       }
+       else{
+               b_info.u.pv.kernel.path = libxl__abs_path(gc, 
"ioemu-stubdom.gz",
+                                               libxl_xenfirmwaredir_path());
+               b_info.u.pv.ramdisk.path = "";
+       }
+
     /* fixme: this function can leak the stubdom if it fails */

     ret = libxl__domain_make(gc, &c_info, &domid);
diff -r 37c77bacb52a tools/libxl/libxl_internal.h
--- a/tools/libxl/libxl_internal.h      Mon May 23 17:38:28 2011 +0100
+++ b/tools/libxl/libxl_internal.h      Tue May 31 02:41:59 2011 +0100
@@ -249,6 +249,7 @@
                                 libxl__domain_build_state *state);

 /* for device model creation */
+_hidden int libxl__is_linux_stubdom(libxl_device_model_info *info);
 _hidden const char *libxl__domain_device_model(libxl__gc *gc,
                                                libxl_device_model_info *info);
 _hidden int libxl__create_device_model(libxl__gc *gc,
diff -r 37c77bacb52a tools/libxl/xl_cmdimpl.c
--- a/tools/libxl/xl_cmdimpl.c  Mon May 23 17:38:28 2011 +0100
+++ b/tools/libxl/xl_cmdimpl.c  Tue May 31 02:41:59 2011 +0100
@@ -1087,7 +1087,7 @@
             fprintf(stderr,
                     "WARNING: ignoring device_model directive.\n"
                     "WARNING: Use \"device_model_override\" instead
if you really want a non-default device_model\n");
-            if (strstr(buf, "stubdom-dm"))
+            if (strstr(buf, "stubdom-dm") || strstr(buf, "linux-stubdom"))
                 fprintf(stderr, "WARNING: Or use
\"device_model_stubdomain_override\" if you want to enable
stubdomains\n");
         }

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